You may have hated seeing them in your lunchbox, but the fact is that green beans are some of the most nutritional vegetables children can eat. And your parents knew that well. One of the oldest cultivated vegetables, green beans have many varieties you could pick from – String beans, French beans or Snap beans are all rich in vitamins A, C, and K, they are a good source of folic acid and heart protective calcium and fiber. Harvesting green beans is an interesting process. The book ‗Healing Foods‘ writes, ―fresh green beans are edible pods picked early in the plant‘s growth cycle. As they mature, the pods become tough, fibrous and inedible‖.